Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Laser differential image-motion monitor for characterization of turbulence during free-space optical communication tests

Not Accessible

Your library or personal account may give you access

Abstract

A laser differential image-motion monitor (DIMM) system was designed and constructed as part of a turbulence characterization suite during the DARPA free-space optical experimental network experiment (FOENEX) program. The developed link measurement system measures the atmospheric coherence length (r0), atmospheric scintillation, and power in the bucket for the 1550 nm band. DIMM measurements are made with two separate apertures coupled to a single InGaAs camera. The angle of arrival (AoA) for the wavefront at each aperture can be calculated based on focal spot movements imaged by the camera. By utilizing a single camera for the simultaneous measurement of the focal spots, the correlation of the variance in the AoA allows a straightforward computation of r0 as in traditional DIMM systems. Standard measurements of scintillation and power in the bucket are made with the same apertures by redirecting a percentage of the incoming signals to InGaAs detectors integrated with logarithmic amplifiers for high sensitivity and high dynamic range. By leveraging two, small apertures, the instrument forms a small size and weight configuration for mounting to actively tracking laser communication terminals for characterizing link performance.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Numerical simulation of a large area scintillometer and laser differential image motion monitor

David M. Brown, Randall T. Hanna, Andrea M. Brown, Jonathan G. Hixson, and Kevin C. Baldwin
Appl. Opt. 61(1) 10-21 (2022)

High-accuracy differential image motion monitor measurements for the Thirty Meter Telescope site testing program

Lianqi Wang, Matthias Schöck, Gary Chanan, Warren Skidmore, Robert Blum, Edison Bustos, Sebastian Els, Reed Riddle, Juan Seguel, Tony Travouillon, Joselino Vasquez, David Walker, and Paul Gillett
Appl. Opt. 46(25) 6460-6468 (2007)

Free-space optical communications link budget estimation

Larry B. Stotts, Paul Kolodzy, Alan Pike, Buzz Graves, Dave Dougherty, and Jeff Douglass
Appl. Opt. 49(28) 5333-5343 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved